Record or add audio to a Powerpoint To record sound files, you need to plug a microphone into the mic jack on your computer's sound card.
The following steps show you how to record a narration for a slide.
In Normal or Slide View, click on the slide you want to add a recording to.
Click the Insert menu < Movies and Sounds < Record Sound.
When the Record Sound dialog box appears, type a name for your recording in the Name box.
Use the Play, Stop, and Record buttons to record your narration.
If you want to change your recording, you need to delete it and start over. Hit the Cancel button from the Record Sound dialog, or select the speaker icon on the slide and hit Delete.
When you're satisfied with your recording, click OK. The Record Sound dialog box will close, and a speaker icon will appear in the middle of your slide. You can resize this icon or move it to other parts of the slide.
Record or add audio to a Powerpoint
To record sound files, you need to plug a microphone into the mic jack on your computer's sound card.
The following steps show you how to record a narration for a slide.
http://gethelp.library.upenn.edu/workshops/biomed/ppt/sound.html
https://online-voice-recorder.com
vocaroo
Use a screencast such as Jing
https://www.techsmith.com/jing-tool.html